Perhaps you should try some spelling variations:
bounded verification » based verification, aided verification
boundary variations » boundary organizations, boundary lubrication
bounded variables » bounded variable, bound variables, bind variables

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("bounded variation") OR ("((((bounded verification) or (boundary variations))) or (bounded variables))")).
• Removing quotes may allow a broader search: (( bounded variation ) or ( ((((bounded verification) or (boundary variations))) or (bounded variables)) )).
• Adding a wildcard symbol may retrieve word variants: (("bounded variation") or ("((((bounded verification) or (boundary variations))) or (bounded variables))"))*.